Heel insert for a shoe sole



FIG. 1 is a left side elevational view of a heel insert for a shoe sole showing my new design;

FIG. 2 is a right side elevational view;

FIG. 3 is a top plan view;

FIG. 4 is a rear elevational view;

FIG. 5 is a cross-sectional view taken on line 5--5 of FIG. 1; and

FIG. 6 is a cross-sectional view taken on line 6-6 of FIG. 1.

The broken line showing of the remaining portions of the shoe sole and upper is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a heel insert for a shoe sole, as shown and described. 